Synthesis, Structural Characterization, and Reactivity of (8-Methoxynaphthyl)hydridogermanium Triflates and Iodides

New 8-(methoxynaphthyl)hydridogermanium triflates and iodides were synthesized by treatment of the corresponding germanes with trifluoromethanesulfonic acid or I2. Their characterization by 1H and 13C NMR and IR spectroscopy is reported. In the solid state, bis(8-methoxynaphthyl)hydridogermanium triflate (6) exhibits a 5-coordinate germanium atom weakly linked to the triflate anion. The germyl iodide rapidly gives the germoxolene with loss of MeI when it is heated in CH3CN. With H2O, amine, and DMSO, the germyl triflates react quantitatively to form new complexes which can be isolated and characterized. The X-ray crystal structure of the hydrate of bis(8-methoxynaphthyl)hydridogermanium triflate (11) shows the predominant formation of a hydrated germyl cation. Several tentative approaches to prepare germanols failed and always gave stable germoxanes instead.